High Strength Grade12.9 40cr 102-8072+102-8073 Excavator Track Bolt And Nut Construction Machinery Parts

High Strength Grade 12.9 40Cr 102-8072+102-8073 Excavator Track Bolt And Nut

Short Description:

Ensure maximum uptime and safety for your heavy machinery with our premium High-Strength Grade 12.9 Excavator Track Bolt and Nut Kit. Specifically engineered for the extreme demands of construction, mining, and excavation, this bolt (102-8072) and nut (102-8073) pair delivers unparalleled shear strength, fatigue resistance, and durability. Manufactured from 40Cr alloy steel and heat-treated for superior performance, this is the reliable solution for keeping your equipment on the job.

Key Features & Benefits:​

Premium Grade 12.9 Strength: The highest commercial grade available, offering a tensile strength of 1220 MPa minimum and a proof load of 1100 MPa. This means exceptional resistance to stretching, breaking, and loosening under extreme shock loads and vibrations.

Durable 40Cr Alloy Steel Construction: Made from chromium alloy steel (40Cr), known for its excellent toughness, hardenability, and wear resistance, significantly outperforming standard carbon steel bolts.

Precision Heat Treatment: Undergoes a controlled quenching and tempering process to achieve the ideal balance of core strength and surface hardness, preventing brittleness and ensuring long-term reliability.

Corrosion Resistance: Features a durable coating (e.g., zinc plating, yellow dichromate) to protect against rust and corrosion, extending the component's life in harsh, wet, or abrasive environments.

Precision Machined Threads: Rolled threads for superior fatigue strength and a perfect, secure fit with the matching nut, reducing the risk of cross-threading and ensuring consistent clamping force.

Complete Kit for Your Convenience: Sold as a matched set (Bolt 102-8072 & Nut 102-8073), guaranteeing compatibility and simplifying your inventory and replacement process.

Built for Heavy-Duty Applications: Designed specifically to withstand the punishing conditions of excavator undercarriages, providing reliable performance in construction, mining, quarrying, and other demanding industrial applications.

Detailed Product Specification Table:

Compatibility:

This High-Strength Track Bolt and Nut kit (102-8072 + 102-8073) is designed as a direct replacement for OEM parts. It is compatible with a wide range of excavator models from leading brands like Caterpillar, Komatsu, Hitachi, Volvo, Doosan, and Kobelco. Please check your machine's manual or existing parts to confirm compatibility.

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Why Choose Our Excavator Track Bolts?

Enhanced Safety: Reduce the risk of catastrophic track failure on site, protecting your personnel and equipment.

Reduced Downtime: Our bolts' superior durability means fewer replacements and less frequent maintenance stops, boosting your project productivity.

Cost-Effective Solution: Avoid the high cost of genuine OEM parts without compromising on quality or performance. Get exceptional value and a longer service life.

Rigorous Quality Control: Every batch is tested to meet or exceed industry standards, ensuring you receive a consistently high-quality product.

FAQ

• Q: What does Grade 12.9 mean?

  A: Grade 12.9 is the highest metric strength grade for bolts. The "12" denotes a tensile strength of 1200 MPa, and the "9" indicates a yield strength ratio of 90%. This signifies a bolt with very high clamp force and resistance to fatigue.

• Q: Are these bolts resistant to vibration loosening?

  A: Yes. The precision fit between the high-strength bolt and nut, combined with the correct installation torque, provides excellent resistance to vibration-induced loosening, a common issue in construction machinery.

• Q: How do I ensure I'm installing these correctly?

  A: Always refer to your equipment's service manual for the specified torque value. Use a calibrated torque wrench and ensure threads are clean and free of debris. Proper installation is critical for achieving the designed performance.

• Q: Do you offer a warranty?

  A: Yes, we stand behind the quality of our parts. Please see our warranty policy for detailed information.

Detailed photos